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(No Model.)

- J. C. GRANT.

METHOD OE AND APPARATUS POR MAKING COFFEE AND OTHER BEVERAGES.

Bla-276,579.

Patented May 1, 1883.

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ATTORNEY N. PETERS. Fhomiimsgnph". Wnhmgmn. D. C.

UNITED STATES PATENT OFFICE.

JOSEPH O. GRANT, OF NEW YORK, N. Y., ASSIGNOR TO HIMSELF, TVILLTATTI W. DUSENBERRY, OF BROOKLYN, NETV YORK, AND ANSEL E. PARK- BURST, OF PLAINFIELT), NETV JERSEY.

METHOD OF AND APPARATUS FOR MAKING COFFEE AND OTHER BEVERAGES.

SPECIFICATION forming part of Letters Patent No. 276,579, dated May 1, 1883.

Application filed May 8, 1882. (No model.)

To all whom @t may concern: vessel A and connects with a water-supply pipe, Be it known that I, JOSEPH O. GRANT, of e', provided withV avalve, c2. The top of vessel the city, county, and State of New York, have B is connected by a pipe, It, provided with a invented a new and Improved Method of and valve, h', with the steam space of A. The Apparatus for Making Coffee and other Bevwater-space of A is connected with supply- 55 erages, of which the following is a full, clear, pipe e by a pipe, fi., provided with a valve, i. and exact description. This part. ot' the apparatus relates to keeping The object of my invention is to insure a a constant supply ot" hot water in A. At the uniform quality in every cupt'ul or other measstart water may be admitted directly to vessell io ured quantilyot ooffeeorotherbeverage made, A from supply e through branch pipe fi, (the 6c and to prevent dissipation ot' the strength and valve of which is not at other times opened aroma of the beverage in making the same. simultaneously with valve 02,) and be heated The invention consists in making infusions directly by the coil. The cold water passes of coffee and other beverages in the act of through pipe c to vessel B and is partially drawing or deliveringvthe same into the cup heated by the hot water and steam in A. 65 or other vessel in which the beverage is served, When B is nearly full valve e2 is closed. The by passing steam and a definite quantity of hot water and steam in A heat the water hot water, or a definite quantity of hot water in B, and .,-hen the escaping steam sounds alone,throughafresh chargeot'the material for the whistle, or when the vessel A needs re- 2o each cupful or otherserving, measured to proplenishing, the valves 71, t" are opened. The 7o duce an infusion of acertain required strength. steam in A, passing up through pipe It into B,

T-he invention also consists in an apparatus presses on the top of the water therein and for making coffee and other beverages in the forces the same out of B through pipes o linto manner stated. A. Then all the water is expelled from B In the accompanying drawings, Figure l valves li t" are closed, and valves e2 being 75 represents aside elevation ot' my improved apopened, a fresh supply ot' water passes into B. paratus for making coiee and other beverages. By this arrangement the lowering ofthe tcm- Fig. 2 is a cross-section of a portion of the apperature ol the water in A is avoided, as the lparatus enlarged, the section being taken on water in B is kept nearly at the same temper- 3o line no of Fig. l. Fig. 3 is a plan otapart of' ature as that drawn from A, and when it 8o the apparatus inverted. Figs. et and 5 are depasses into A it is quickly raised to the boiltail views of parts of the apparatus. Fig. 6 is ing-point.

a perspective view of the removable receptacle U represents the l'aucet through and by for the coffee or other material used with the which the beverage is drawn and delivered apparatus. into the cup or other vessel in which the bev- 85 Referring to the drawings, A represents a erage is served. The faucet is also adapted hot-water vessel, from which the water for to receive the material from which the bevermaking the beverage is drawn. This vessel age is made. It is attached to or connected may be provided with a steam-coil, a, to heat with the outside of vessel A, and is provided 4o the water; or, it' preferred, gas-jets or other with a valve-chamber, I, from which pipes 7:1, 9o

, suitable means may be used for that purpose. provided respectively with valves k l', extend The water-vesselmaybeprovidedwithasteaminto vessel A, pipe 7a terminating below the gage, b, a water-gage, o, and asat'ety-valve, d. water-line and pipe l above the water-line in Bis an auxiliary water-vessel, in which the the steam-space. By means ot' pipes'.y l steam water is heated before being admitted to vesand water may be simultaneously drawn vtrom 95 sel A. Vessel B, as represented, is placed in vessel A and separately conducted to the rcconnection withvessel A,sothataportion ot1 its ceptacle for the ground coffee or other niasurface projects into the steam-space ol' A. It terial, or by closing one of the valves 7; I/ may be provided with awater-gage, j', and whissteam or water only may be drawn. The valve 5o tle g. Appe,e,extends from vessel Bthrough m in chamber I is attached to a screw-stem, roo

m', by which it is raised and lowered. A chamber, L, which communicates with the valve-chamber, serves as the mouth of the faucet and as a receptacle for the ground coffee or other material, or as a case for the cup or tube n., in which the material is preferably placed. rlhe cup or tube n, which is adapted to forni a tight connection with the mouth of the faucet, has aperforated or strainer bottom, and when placed in the chamber L it is held by spring-latches o, placed in guide-slots in the under side of the faucet, which project under the edge of the cup or tube when thrown forward by their springs. A packing-gasket, q, may be placed in the upper part ot' chamber L to prevent leakage.

To latches o 0 are connected by sliding dovetailed joints, rods s s, which pass up through the faucet and join a yoke, M, through which the valve-stein m is screwed, so that when the valve is raised and lowered the yoke, rods s s, and latches move with it One of the rods s carries a pawl, t, which engages a ratchet on one of a train ot' registers, i", placed in a cavity in the faucet. The registering attachment is for the purpose of registering each cup or tube a containing the material from which a cupful of coffee or other beverage is to be made. Vhen a cup or tube, n., is placed in the chamber L and the valve m is raised the upward movement ofthe rods draws the latches against the tube a, which is pressed tightly against the gasket q, the pawl is moved forward one tooth, and when the valve is screwed down the pawl, engaging the ratchet, moves the registering devices and registers the cup or tube n last inserted.

rlhe process of making coffee will now be described.

The water in A having been heated to the proper degree, if, say, a cup, N, of coffee is required of a certain strength, a cup or tube, n, charged with sufficient ground coffee to produce a quantity of liquid coffee ofthe desired strength sufficient to supply cup N, is placed in the faucet. rEhe valve is now opened, the steam passes to the coffee, heating and moistening it, whereby the giving off of the aromatic substance is greatly facilitated, and the hot water entering at about the same instant takes up the essential properties of the coffee and flows as liquid coffee from the faucet into the cup N, which serves as a measure to indicate when sufficient water has passed through the ground coffee to produce the beverage of the desired quantity and strength, and when this is indicated by the lling of the cup the valve m is closed. The tube a, with its exhausted charge of coffee, is now removed and another with a fresh charge of coffee is placed in the faucet to make another cupful of beverage. rlhe same process is employed to make tea and other beverages produced by infusing the beverage-yielding material, and also for chocolate and similar substances. The quantity of coffee 4or other material placed in thetnbe orcup n is intended arrastra to bear a definite relation to the capacity of the cup N, or other vesselinto which the beverage is dra-wn, and this relation must be dctermined by the degree of strength the beverage should have to suit individual tastes. The tubes or cups may be but partially filled with the ground coffee; or several .faucets may be attached to the vessel A, each having a separate connection with the hot-water vessel, and adapted to supply servings or drawings of different quantities, butof uniform quality. For example, one faucet may be adapted to receive tubes a holding a. half-ounce of ground coffee capable of producing sufficient beverage of a desired strength to till a cup, N, holding eight fluid ounces. Another faucet may receive tubes a holding an ounce, and capable of supplying a sixteen-ounce cup, the beverage having the same quality in both cases.

The process, it will be understood vfrom the foregoing, consists in making coffee instantaneously in the act of drawing or delivering the same into the cup or other vessel in which it is served. The object is to make the beverage freshly for each drawing, or serving from a fresh charge of the material and at the moment of serving it, whereby the necessity of accumulating a quantity ot' the beverage before commencing to serve it is avoided, and there is no opportunity of its losing its fragrance and strength and acquiring the disagreeable oder and taste which coffee particularly is apt to acquire if permitted to stand some time before usine'. When coffee is made in quantities by direct and prolonged contact ofthe water with the ground coffee it is liable to be injured by the water extracting the bitter astringent properties of the coffee. In my process the water is passed rapidly through the material, being` forced through the same by thepressure of steam in A, and it extracts only the fragrant aromatic sub stances and makes coffee of a very delicate llavor,strong, but-without bitterness. Another important advantage is that the servings of coffee are of a uniform quality. lf a certain grade of coffee is used, and the cups are of uniform size, the servings will be uniformly the same in quality. Again, as no coffee is necessarily accumulated or made except as needed and at the moment,depreciation ofthe beverage by delay in serving is avoided. If a weaker cup of coffee is wanted than that for which the faucet or faucets are adjusted, it can be had by simply decreasing the amount ol" material placedin the cups or tubes a. llence there is no necessity for having a separate supply of hot water at hand.

The steam in vesselA should be kept at sut'- ficicnt pressure to rapidly drive the water through the faucet and the coffee or other material placed in the faucet.

The latches 0 o are opened to admit the cup or tube a by means of pivoted levers u u, connected with pins on the latches and operated by pusher D.

lt must be understood that the cups or vesn IOO ITO

sels N may be adapted to indicate the quantity of liquid to be drawn through the faucet to produce the proper strength of coffee, instead of their capacity being limited to or regulated by the cups or tubes n.

I claim- 1. The method of making coffee and other beverages in the act of drawing or delivering the same into the cup or other vessel in which the beverage is served, and for each serving separately, which consists in introducing` into a suitable receptacle in a faucet a charge of ground coffee or similar material sufficient to infuse one cup or one drawing of the beverage to the strength desired, and then passing through said charge enough hot water to supply said cup or drawing, substantially as herein set forth.

2. The method of making coffee and other beverages for each serving separately from a fresh charge of material, and at the moment of service, which consists in taking a quantity of the material measured to yield an infusion of a desired strength, passing a definite quantity of hot water through the said material, and delivering the inf'usion into a cup or other vessel adapted to receive the quantity of the beverage having the strength which the material is measured to yield, substantially as herein set forth.

3. rlhe method of making coffee and other beverages, which consists in placing in a suitable receptacle connected with a faucet a charge of ground coffee or similar material sufficient to infuse one cup or one drawing ot' beverage to the strength desired, and then passing through the said charge steam and sufficient hot water to supply said cup or said drawing of beverage, substantially as herein set forth.

4. In an apparatus for making coffee and other beverages, the combination of a hotwater vessel, A, and detached cup or vessel N, with an intermediate receptacle for the ground coffee or other material, provided with a valve, and connected with the water-vessel, substantially as and for the purpose specified.

5. In an apparatus for making coffee and other beverages, the combination of a hotwater receptacle, a faucet provided with a receptacle for holding a charge of ground coffee or similar material below the faucet-valve, and a pipe, k, provided with a valve, kf, leading from the valve-chamber of the faucet to the water-space of the water-receptacle, substantially as herein described.

6. The combination of a hot-water vessel, a

faucet provided with a receptacle for holding a charge of coffee or similar material below the faucet valve, and pipes connecting the valve-chamber of the faucet with the hot-water and steam spaces of the water-vessel, substantially as described.

7. Thefaucet C, connected with a water-vessel, and provided with a suitable valve, in combination with a removable cup or tube, a, said faucet and cup or tube having no connection with a cup or other vessel for receiving the coffee or other liquid drawn through the faucet, substantially as herein shown and described.

S. The faucet C, connected with a water-ves sel, and provided with a suitable valve, in combination with a detachable cup or tube for the coffee or other material, and the vessel N for receivingthe beverage, placed under the mouth of the faucet, but having no connection therewith, for the purpose specified.

9. The faucet C, provided with a suitable recess or chamber to receive the cup or tube for the coffee or other material, and with latches o o, in combination with the cup or tube a, substantially as described.

l0. rlhe combination of a hot-water vessel, the faucet C, provided with a suitable valve, pipe or pipes connecting the valve-chamber in the faucet with the l1otwater vessel, a detachable receptacle for the ground coffee or other material, placed below the faucet-valve, and a serving cup or vessel, N, placed under the mouth of the faucet, but having no connection therewith, as and for the purpose specified.

11. The combination of hot-water vessels A B, constructed as described, with pipe e, connected with a water-supply pipe, and pipes l1. i, provided with suitable valves, substantially as described.

l2. The combination of the pusher D and levers u u with the latches o o, for the purpose specified.

13. In combination with the cup or tube a and the faucet C, a registering device connected with the faucet-valve, so that every cup or tube placed in the faucet is recorded bythe registering apparatus, substantiallyA as described.

14. In combination with the detachable cup or tube a, valve on, and rod s, provided with a pawl, t, the registering device o', arranged to register the number of cups or tubes placed in the faucet, substantially as specified.

JOSEPH C. GRANT. Witnesses:

GEO. D. WALKER, J. E. ScARBoRoUGH.

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